| 年度 | 实际值 |
|---|---|
| 1992 | 413.09 |
| 1993 | 417.48 |
| 1994 | 421.68 |
| 1995 | 426.91 |
| 1996 | 432.26 |
| 1997 | 437.69 |
| 1998 | 443.01 |
| 1999 | 448.35 |
| 2000 | 446.83 |
| 2001 | 449.75 |
| 2002 | 455.1 |
| 2003 | 460.08 |
| 2004 | 464.82 |
| 2005 | 466.2 |
| 2006 | 472.67 |
| 2007 | 479.58 |
| 2008 | 484.67 |
| 2009 | |
| 2010 | 497.91 |
| 2011 | 502.4 |
| 2012 | 508.6 |
| 2013 | 508.1 |
| 2014 | |
| 2015 | 516.59 |
| 2016 | 520 |
| 2017 | 520 |
| 2018 | 523 |